Siegwurm the Sky Ruler

Siegwurm the Sky Ruler (天覇のジークヴルム, Tenha no Jīkuvurumu) is an unique monster and one of The Seven Colossi.

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Siegwurm is a golden dragon encountered randomly. However, as it flies too high in the sky, players can't reach it. According to the Professor it is possible to fight Siegwurm in the Magnanimous Sanctuary